Vapor discharge plug for liquid fuel burners



Juhe'13, 1950 A. J. TURPIN 2,511,753

VAPOR DISCHARGE 1 1m FOR LIQUID FUEL BURNERS Filed Fab. 1, H46

11 I IN-VENT.

ALEXANDER d. TueH/v A 7' TORNE'X Patented June 13, 1950 UNITED lSTATES GE 7 2,511,753 H I, vapor: nisenairea Prosper: mourn rust. a

- BURNERS g Alexander J. Turpin, Stewart Manor; Nit. as-

,signor to Hauck Manufacturing Company, Brooklyn, Y., a corporatib'ii '1. NeWXoik Application February 1, 1946, Serial Nbgfi44594'7 1 Claim. (01. sha lot) The invention relates to burner apparatusfiesigned fOr the combustion of liquid fuels "such as kerbsene'and gasoline, andmore especiallybi the vapor izable type of apparatus including preheating mean's comprising a coiled supply pipeonwofm into which a vapor plug or nozzle element is' adapted to discharge.

In the use of this type of burner apparatus, it has been found that the plug element quickly becomes clogged with carbon deposits and impurities resulting from vaporizing and cracking of the fuel, and thus requires frequent cleaning of the plug orifice with consequent interruption of the burning operation being conducted with the apparatus. Provision has been made, such as an interposed screen of mesh finer than the orifice opening, to intercept the particles of a size which would not pass said orifice opening. This, however, not only retards the free flow of vaporized fuel but there is built up a deposit on the upstream side of the surface of the screen which, also, is very dimcult to remove.

It is an object of the present invention to provide a vapor discharge plug of the aforesaid nature which may be operated for a much longer period in that the required time for cleaning is greatly prolonged.

A further object of the invention is to provide a simple accessory for use with the standard plug, or a special form of plug, whereby particles of matter will be collected as well as diverted in advance of the orifice zone.

In carrying out the invention, there is seated within the hollow cylindrical body of a plug a hollow, frusto-conical guard element which is displaced axially backward, for example, from an inwardly directed wall or outlet end of the plug and in which the orifice is provided, the same being coaxial with the conical element. The latter is provided, also, with a hollow cylindrical tip located in the axis of said orifice and conical element.

By this expedient, particles not intercepted by the conical guard element must pass through its extension before reaching the entrance of the orifice of the plug which is of a much smaller diameter. Particles too large to pass through said orifice instead of accumulataing about its entrance will either fall back into the hollow conical element or will collect about the conical inturned wall portion. Particles that do obstruct the opening can be readily displaced to one side of the orifice by inserting from the discharge side a wire cleaning-needle until the collecting space is completely filled. No cleaning will, therefore, be

required until the-accumulation becomes such that it will rise to a location directly in front of the orifice. however, willbe considerably delayed because of-the ample storage space prov-ided. Furthermore, the, actual cleaning, operation is a very simple one requiring merely withdrawing the plug and scraping with a suitable implement such as a nail or wire and then shaking to dislodge the loosened particles.

The nature of the invention, however, will best be understood when described in connection with the accompanying drawings, in which:

Fig. 1 is a longitudinal section through the novel vapor discharge plug and a portion of the connecting fuel supply pipe; and Fig. 2 is a similar view illustrating a modification, with supply pipe removed.

Fig. 3 illustrates in longitudinal section a further embodiment of the invention.

Referring to the drawings, l0 designates the body of the novel vapor discharge plug, the same being generally cylindrical and threaded at its inner end, as indicated at I I, to be fitted into the end of a fuel supply pipe l2, preferably turned at at the connection to decrease the accumulation of carbon and other particles in the region immediately behind the orifice l3 of the plug. This orifice is located in the longitudinal axis of the cylindrical body Ill, being provided through a wall l4 closing the outlet end of the body.

The wall is intended, also, to afford a flange l5 for use in inserting the plug into the supply pipe and disconnecting it therefrom. Furthermore, it is preferred to direct a portion of the wall I4 inwardly symmetrically about orifice [3 which continues through the inwardly directed portion to afford continuous communication between the interior of the body and the said orifice. The inwardly directed portion [6 is of frusto-conical conformation with apex directed toward the inlet end of the plug to afford thereby an annular cavity I! for receiving and storing particles as they accumulate in the operation of the plug in burner apparatus. However, as indicated in Fig. 2 of the drawings, the body portion 20 of the plug may have this storage portion 2| provided by a reversely directed frusto-conical portion 22.

In addition to this provision for storing particles as they accumulate within the body of the plug, a means is provided for preventing the entrance of a substantial proportion of the foreign matter to the region immediately in advance of the orifice entrance. To this end, there is seated in the body It), Fig. 1, as upon a shoulder 25 thereof, a

hollow, frusto-conical guard member 28, the base of the same resting upon said shoulder for displacing the guard member also a substantial distance in advance of the orifice entrance. The said guard member 26 extends, preferably, beyond the inlet opening 21 of the body, more especially in a tubular extension portionZB of a diameter appreciably greater than that of the orifice [-3. By this expedient, many of the particles are intercepted due to the reduced entrance area and collect in an additional annular pocket or storage space 29 formed between the outer surface of the guard member and the juxtaposed inner surface of the body "I.

It is preferred, also, as where-the fuel supply connection to the plug is an elbow such as the elbow 30, to continue the tubular extension 3| of the guard member 32 into the said elbow and to follow its curvature, asis indicated in Fig. 3 of the drawings, thereby increasing the storage capacity for objectionable particles. I claim: A vapor discharge plug for liquid fuel burner apparatus, comprising a hollow cylindrical body affording an inner coaxial shoulder and con- Number 4 stricted at the outlet end which is provided with an axially disposed orifice, the opposite end of the body being adapted to receive a fuel supply pipe, and an open-ended frusto-conical hollow guard member located within the body on said shoulder coaxially with respect to its orifice and displaced a substantial distance from the orifice entrance, the base of said guard member facing the orifice whereby an annular pocket is provided in advance of the orifice for collection of foreign matter diverted thereto by said guard member.

ALEXANDER J. TURPIN.

REFERENCES CITED UNITED STATES PATENTS Name Date 1,529,590 Hoing Mar. 10, 1925 1,711,665 Wolf May 7, 1929 1,728,581 Van Vorst et a1. Sept. 17;1929 1,879,012 Armstrong Sept. 27, 1932 2,190,357 Ginter Feb. 13, 1940 2,257,691 Keep Sept. 30, 1941 

